Speaking of closing the doors and window regulators, a great tip I've read on here and bears repeating is to avoid closing the doors with the windows down. It was pointed out that the glass shakes noticeably doing that, not good for the regulator and clips.

Like operating the outer door handle with your thumb on the key cylinder cover, one of those E53 habits that make fragile parts last longer.

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04 X5 3.0i auto
03 X5 4.6is